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120 lines
3.3 KiB
C++
120 lines
3.3 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::intersection
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Description
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Foam::intersection
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SourceFiles
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intersection.C
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\*---------------------------------------------------------------------------*/
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#ifndef intersection_H
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#define intersection_H
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#include "scalar.H"
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#include "NamedEnum.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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/*---------------------------------------------------------------------------*\
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Class intersection Declaration
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\*---------------------------------------------------------------------------*/
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class intersection
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{
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private:
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// Static data
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//- Relative tolerance for point in a plane.
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// The tolerance is relative to the object size.
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// Used to determine if a half-ray from a point in plane of triangle
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// intersects the triangle or not.
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static scalar planarTol_;
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public:
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enum direction
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{
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VECTOR,
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CONTACT_SPHERE
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};
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enum algorithm
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{
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FULL_RAY, // Intersecting with full ray
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HALF_RAY, // Intersecting with half ray
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VISIBLE // Intersecting with the visible side
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};
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// Static Member Functions
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//- Direction names
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static const NamedEnum<direction, 2> directionNames_;
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//- Projection algorithm names
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static const NamedEnum<algorithm, 3> algorithmNames_;
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//- Return planar tolerance
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static scalar planarTol()
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{
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return planarTol_;
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}
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//- Set the planar tolerance, returning the previous value
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static scalar setPlanarTol(const scalar t)
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{
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if (t < -VSMALL)
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{
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FatalErrorIn
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(
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"scalar intersection::setPlanarTol(const scalar t)"
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) << "Negative planar tolerance. This is not allowed."
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<< abort(FatalError);
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}
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scalar oldTol = planarTol_;
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planarTol_ = t;
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return oldTol;
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}
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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